CN102606380A - Offset type radial plunger motor of eight-star single-action piston cylinder - Google Patents
Offset type radial plunger motor of eight-star single-action piston cylinder Download PDFInfo
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- CN102606380A CN102606380A CN2011101652738A CN201110165273A CN102606380A CN 102606380 A CN102606380 A CN 102606380A CN 2011101652738 A CN2011101652738 A CN 2011101652738A CN 201110165273 A CN201110165273 A CN 201110165273A CN 102606380 A CN102606380 A CN 102606380A
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- plunger
- piston
- piston shoes
- bent axle
- main casing
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Abstract
The invention provides an offset type radial plunger motor of an eight-star single-action piston cylinder. Eight uniformly-distributed plunger cylinders are mounted on a main shell (18); an offset (H) exists between an axis of each plunger cylinder and a center line of a crank (15); cylinder flanges (8) are mounted at the outer sides of the plunger cylinders; plungers (11) are mounted in the plunger cylinders on the main shell (18); two sealing rings (10) are mounted on the circumference of each plunger (11); a piston shoe (13) is mounted on a bulb of each plunger; a stopping block (12) formed by two semicircular shapes is mounted on each piston shoe (13); a spring clamping ring (7) is mounted on each piston shoe (13) at the outer side of the stopping block (12); the plungers (11) and the piston shoes (13) are integrally linked through the spring clamping rings (7) and the stopping blocks (12); the other end of each piston shoes (13) is in contact with the outer circle of an eccentric wheel of the crank (15); and the left end and the right end of each slipper (13) are respectively provided with retainer rings (17 and 17'), and the piston shoes (13) are clamped on the surface of the outer circle of the eccentric wheel of the crank (15) through the retainer rings (17 and 17').
Description
Technical field
The present invention relates to the structure of piston cylinder radial plunger piston motor.
Background technique
Low speed high torque hydraulic motor extensive use in the various machineries of low speed, heavy duty.It adopts the plunger type element mostly, and two kinds of axial piston and radial plunger types are arranged.Can divide single-acting formula and multiaction formula by its revolution effect number of times.In order to obtain low speed and big torque, adopt high pressure and big discharge capacity, its boundary dimension and volume and rotary inertia are all very big.The plunger case axis of existing single-acting link type radial plunger piston motor passes through crankshaft axis.Plunger and connecting rod adopt ball-joint, and the piston shoes surface of the other end of connecting rod contacts with the eccentric wheel cylindrical of bent axle.In the maintenance of oil hydraulic motor, find when the piston shoes of connecting rod partly occur leaking, seize to take place, can't rotate.Behind patching recovery piston shoes surface, the probability that oil hydraulic motor is resumed work is very low, occurs piston shoes when the oil hydraulic motor band is carried again and partly occurs leaking, and seize takes place.Through a large amount of experimental analyses, reason is after repairing the piston shoes surface, and very difficult recovery makes the axis of connecting rod just in time through the surperficial symmetry center of piston shoes; Cause the relative connecting rod ball pivot of hydraulic coupling center asymmetric, under the effect of high pressure oil, cause unbalance loading; Make the relative slip surface of sealing surface of piston shoes produce the slit; Leakage of oil takes place, and the instantaneous piston shoes sealing surface that makes of high pressure oil is destroyed, and seize takes place.
Summary of the invention
The purpose of this invention is to provide a kind of eight star single action piston cylinder offset radial plunger piston motors.
The present invention is eight star single action piston cylinder offset radial plunger piston motors, and bent axle 15 is housed in main casing 18, and bent axle 15 1 ends are located in main casing 18 by bearing 6; Bent axle 15 the other ends are by the 6 ' location of the bearing on the front cover 16 that is contained in main casing 18 front ends; Front cover 16 is fixed on main casing 18 front ends, and eight equally distributed plunger cases are arranged on the main casing 18, and the axis of each plunger case has a side-play amount H apart from the center line of bent axle 15; The outside of plunger case is equipped with cylinder barrel flange 8; Cylinder barrel flange 8 is fixed on the main casing 18, and plunger 11 is housed in the plunger case on the main casing 18, and two seal rings 10 are housed on plunger 11 circumference; One end of plunger 11 is a ball head structure; Piston shoes 13 are installed on the bulb of plunger 11; Two semicircle blocks of forming 12 are housed on piston shoes 13; On the piston shoes 13 in block 12 outsides, spring arch clasp 7 is housed, plunger 11 and piston shoes 13 is connected as one, the bulb of plunger 11 is limited in the ball-and-socket rotates through spring arch clasp 7 and block 12; The other end of piston shoes 13 contacts with the eccentric wheel cylindrical of bent axle 15, and the right ends of piston shoes 13 respectively has a back-up ring 17,17 ', by back-up ring 17,17 ' with piston shoes 13 hoop on the eccentric wheel outer round surface of bent axle 15.
The present invention adopts and makes plunger and Machining of Connecting Rod is an integral body, and adopts ball-joint with piston shoes, and the other end of piston shoes contacts with the eccentric wheel cylindrical of bent axle; Shortened the distance of the centre of sphere, be easy to guarantee the hydraulic action symmetry piston shoes centre of sphere of piston shoes surface generation like this, unbalance loading has not taken place to the piston shoes surface; The sealing surface of piston shoes is contacted with slip plane all the time; Guarantee good slipping property, reduce the piston shoes manufacture difficulty, the increase of oil hydraulic motor life-span, processing, the maintenance difficulty of this type are reduced.
Description of drawings
Fig. 1 is the structural drawing of eight star single action piston cylinder offset radial plunger piston motors; Fig. 2 is that the A-A of pintle is to sectional drawing; Fig. 3 be the B-B of pintle to sectional drawing, Fig. 4 be the C-C of pintle to sectional drawing, Fig. 5 is that the D-D of pintle is to sectional drawing; Fig. 6 be the E-E of pintle to sectional drawing, Fig. 7 is that L-L among Fig. 1 is to sectional drawing.
Embodiment
As shown in Figure 1, eight star single action piston cylinder offset radial plunger piston motors of the present invention comprise main casing 18, bent axle 15; Rolling bearing 6,6 ', eight plunger 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h, eight piston shoes 13a, 13b, 13c; 13d, 13e, 13f, 13g; 13h, pintle 5, pintle housing 2, front cover 16 and rear end cover 4.It is eight starlike that profile of the present invention is, and eight equally distributed plunger cases are arranged on the main casing 18, and the axis of each plunger case has a side-play amount H apart from the center line of bent axle 15.The outside of plunger case is equipped with cylinder barrel flange 8; Cylinder barrel flange 8 is fixed on the main casing 18 by screw 9; Bent axle 15 is housed in main casing 18; Bent axle 15 1 ends are located in main casing 18 by bearing 6, and bent axle 15 the other ends are by the 6 ' location of the bearing on the front cover 16 that is contained in main casing 18 front ends, and front cover 16 is fixed on main casing 18 front ends by screw 14.Plunger 11 is housed in the plunger case on the main casing 18, two seal rings 10 are housed on plunger 11 circumference.One end of plunger 11 is a ball head structure; Piston shoes 13 are installed on the bulb of plunger 11; Two semicircle blocks of forming 12 are housed on piston shoes 13, on the piston shoes 13 in block 12 outsides, spring arch clasp 7 are housed, plunger 11 and piston shoes 13 are connected as one through spring arch clasp 7 and block 12; The bulb of plunger (11) is limited in the ball-and-socket rotates, can not separate.The other end of piston shoes 13 contacts with the eccentric wheel cylindrical of bent axle 15.The right ends of piston shoes 13 respectively has a back-up ring 17; 17 ', by back-up ring 17,17 ' with piston shoes 13 hoop on the eccentric wheel outer round surface of bent axle 15; Piston shoes 13 can be slided at the eccentric wheel outer round surface of bent axle 15, but can not break away from the eccentric wheel outer round surface of bent axle 15.On main casing 18, be fixed with pintle housing 2 through screw 1, an end of pintle housing 2 passes through fixedly rear end cover 4 of screw 3, and pintle 5 is contained in the pintle housing 2, and pintle 5 and 15 coaxial connections of bent axle drive pintles 5 by bent axle 15 and rotate synchronously.Have working oil oil duct P and I on the pintle housing 2.
As shown in Figure 7, the span of side-play amount H is: 0＜H＜60mm.
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, eight oil ducts are arranged on main casing 18, an end leads at each plunger case pumping cavity, the other end respectively with pintle housing 2 on eight oil ducts communicate.Pintle is divided into equilibrium oil district, oil distributing zone, working oil district.Cross section A-A, E-E are the equilibrium oil district, and C-C is an oil distributing zone, and B-B, D-D are the working oil district.The annular chamber M of B-B section communicates with semi-annular chambers F in the oil distributing zone of C-C section; The annular chamber N of D-D section communicates with semi-annular chambers G in the oil distributing zone of C-C section; F chamber in the oil distributing zone respectively with the semi-annular chambers K in A-A, E-E section equilibrium oil district; K ' communicates, the G chamber in the oil distributing zone respectively with the semi-annular chambers J in A-A, E-E section equilibrium oil district, J ' communicates.Pintle when rotation, the annular chamber M of B-B section all the time with pintle housing 2 on working oil oil duct P communicate, the annular chamber N of D-D section all the time with pintle housing 2 on working oil oil duct I communicate.
As shown in Figure 1; All be processed with damping hole in piston shoes 13 and the plunger 11; Hydraulic oil can communicate plunger case and piston shoes 13 bottom t by force through damping hole, and the balance that between piston shoes 13 and plunger 11, keep-ups pressure promotes bent axle 15 rotations through pressure oil; Let 15 seal actions that play pressure oil of piston shoes 13 relative bent axles, not as main force transfer element.
Working procedure of the present invention is:
When the P mouth connect high-pressure oil pipe and I mouth and connects low pressure fuel pipe, the high pressure oil of P mouth got into the annular chamber M in pintle working oil district, got into the semi-annular chambers F of oil distributing zone by annular chamber M, and at this moment semi-annular chambers F delivers to plunger 11a through four oil ducts on pintle housing 2 and the main casing 18 respectively with pressure oil; 11b, 11g, the top pumping cavity of 11h is introduced the pressure balance chamber on the piston shoes 13 by plunger 11 and the damping hole on the piston shoes 13 with high pressure oil; Act on the bent axle 15 eccentric wheel cylindricals plunger 11a, 11b, 11g simultaneously; 11h receives the high pressure oil effect, inwardly moves along plunger case, and it is big that the pumping cavity volume becomes, under bent axle 15 eccentric effects; Make plunger 11c, 11d, 11e through piston shoes 13; 11f outwards moves along plunger case, the pumping cavity smaller volume, and pumping cavity fluid is through the semi-annular chambers G of four oil ducts entering pintle oil distributing zones of the correspondence on corresponding four oil ducts on the main casing 18 and the pintle housing 2; Get into the annular chamber N in working oil district by semi-annular chambers G and since annular chamber N all the time with pintle housing 2 on hydraulic fluid port I communicate plunger 11c at this moment; 11d, 11e, the pumping cavity fluid of 11f flows out through hydraulic fluid port I.So the directed force F that high pressure oil acts on plunger 11a, 11b, 11g and 11h acts on bent axle 15 through piston shoes 13, to the rotating center O formation torque T of bent axle, bent axle counterclockwise rotates.Along with bent axle 15 rotates under the effect of torque T; Because pintle 5 and 15 coaxial connections of bent axle; So the eccentric wheel of pintle 5 and bent axle 15 phase place all the time is consistent; Therefore outside plunger movable working oil chamber keeps and the I mouth connects the low pressure fuel pipe connection, and inwardly the maintenance of plunger movable working oil chamber connects the low pressure fuel pipe connection with the P mouth.Each plunger case will communicate with high pressure oil-feed and low pressure oil return successively, guarantees that bent axle rotates continuously.If the oil inlet and oil return mouth exchanges, then oil hydraulic motor counter-rotating.
Claims (3)
1. eight star single action piston cylinder offset radial plunger piston motors; Bent axle (15) is housed in main casing (18); Bent axle (15) one ends are located in main casing (18) by bearing (6), and bent axle (15) the other end is by the location of the bearing (6 ') on the front cover (16) that is contained in main casing (18) front end, and front cover (16) is fixed on main casing (18) front end; It is characterized in that eight equally distributed plunger cases are arranged on the main casing (18); The axis of each plunger case has a side-play amount (H) apart from the center line of bent axle (15), and the outside of plunger case is equipped with cylinder barrel flange (8), and cylinder barrel flange (8) is fixed on the main casing (18); Plunger (11) is housed in the plunger case on the main casing (18), on plunger (11) circumference two seal rings (10) is housed; One end of plunger (11) is a ball head structure; Piston shoes (13) are installed on the bulb of plunger (11); Two semicircle blocks of forming (12) are housed on piston shoes (13); On the piston shoes (13) in block (12) outside, spring arch clasp (7) is housed, plunger (11) and piston shoes (13) is connected as one, the bulb of plunger (11) is limited in the ball-and-socket rotates through spring arch clasp (7) and block (12); The other end of piston shoes (13) contacts with the eccentric wheel cylindrical of bent axle (15), and the right ends of piston shoes (13) respectively has a back-up ring (17,17 '), by back-up ring (17,17 ') piston shoes (13) is bound round on the eccentric wheel outer round surface of bent axle (15).
2. eight star single action piston cylinder offset radial plunger piston motors according to claim 1 is characterized in that the span of side-play amount (H) is: 0＜H＜60mm.
3. eight star single action piston cylinder offset radial plunger piston motors according to claim 1; It is characterized in that all being processed with damping hole in piston shoes (13) and the plunger (11); Hydraulic oil can communicate plunger case and piston shoes (13) bottoms (t) by force through damping hole, and balance keep-ups pressure between piston shoes (13) and plunger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165273.8A CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165273.8A CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606380A true CN102606380A (en) | 2012-07-25 |
| CN102606380B CN102606380B (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110165273.8A Expired - Fee Related CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN102606380B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60224979A (en) * | 1984-04-21 | 1985-11-09 | Fukushima Seisakusho:Kk | Variable capacity radial piston motor controller |
| DE3505176C1 (en) * | 1985-02-15 | 1986-04-24 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen | Radial-piston pump for hydraulic media |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| US5131818A (en) * | 1991-05-07 | 1992-07-21 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co. Kg | High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
| JP4202832B2 (en) * | 2002-06-10 | 2008-12-24 | 株式会社荏原製作所 | Axial piston pump or motor |
| CN101713298A (en) * | 2009-11-05 | 2010-05-26 | 昆山金发液压机械有限公司 | Hydraulic motor provided with friction pair with nanometer graphite layer and method for processing nanometer graphite layer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU861714A1 (en) * | 1979-12-25 | 1981-09-07 | За витель | Radial piston hydraulic engine |
-
2011
- 2011-06-16 CN CN201110165273.8A patent/CN102606380B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60224979A (en) * | 1984-04-21 | 1985-11-09 | Fukushima Seisakusho:Kk | Variable capacity radial piston motor controller |
| DE3505176C1 (en) * | 1985-02-15 | 1986-04-24 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen | Radial-piston pump for hydraulic media |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| US5131818A (en) * | 1991-05-07 | 1992-07-21 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co. Kg | High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
| JP4202832B2 (en) * | 2002-06-10 | 2008-12-24 | 株式会社荏原製作所 | Axial piston pump or motor |
| CN101713298A (en) * | 2009-11-05 | 2010-05-26 | 昆山金发液压机械有限公司 | Hydraulic motor provided with friction pair with nanometer graphite layer and method for processing nanometer graphite layer |
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| CN102606380B (en) | 2014-10-15 |
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